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🌎 Location: Greenwich, United Kingdom [change]

NGC 6642 - Globular Cluster

NGC 6642 is a Globular Cluster in the Sagittarius constellation. NGC 6642 is situated close to the celestial equator and, as such, it is at least partly visible from both hemispheres in certain times of the year.

NGC 6642
Globular Cluster
Sagittarius
  • NGC 6642 is below the horizon from Greenwich, United Kingdom [change]. See also rise and set times.
  • Given its visual magnitude of 10.24, NGC 6642 is visible with the help of a binocular with a 80mm aperture or a small telescope.
Available Resources for NGC 6642 - Globular Cluster

Photometric information of NGC 6642

The following table lists the magnitude of NGC 6642 in different bands of the electomagnetic spectrum (when available), from the B band (445nm wavelength, corresponding to the Blue color), to the V band ( 551nm wavelength, corresponding to Green/Yellow color), to the J, H, K bands (corresponding to 1220nm, 1630nm, 2190nm wavelengths respectively, which are colors not visible to the human eye).

11.3
10.24

For more information about photometry in astronomy, check the photometric system article on Wikipedia.

Apparent size of NGC 6642

The following table reports NGC 6642 apparent angular size. The green area displayed on top of the DSS2 image of NGC 6642 is a visual representation of it.
3.9 arcmin
3.9 arcmin

Digitized Sky Survey image of NGC 6642

The image below is a photograph of NGC 6642 from the Digitized Sky Survey 2 (DSS2 - see the credits section) taken in the red channel. The area of sky represented in the image is 0.5x0.5 degrees (30x30 arcmins).

Image of NGC 6642 - Globular Cluster star
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DSS2 image of NGC 6642 in the Red band. The green region on the image is a representation of the major (3.9 arcmin) and minor (3.9 arcmin) axes of the object's apparent size.

Celestial coordinates and finder chart of NGC 6642

Celestial coordinates for the J2000 equinox of NGC 6642 are provided in the following table:

18h 31m 54s
-23° 28’ 33”

The simplified sky charts below show the position of NGC 6642 in the sky. The first chart has a field of view of 60° while the second one has a field of view of 10°.

Finder chart NGC 6642 - Globular Cluster star
Simplified finder chart for NGC 6642 - Globular Cluster.

Finder chart NGC 6642 - Globular Cluster star
Simplified finder chart for NGC 6642 - Globular Cluster.

Rise ans set times of NGC 6642 from your location

Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

Today's NGC 6642 - Globular Cluster rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 113.5°
Max altitude: 15.0°
Azimuth: 246.5°
NGC 6642 - Globular Cluster is below the horizon from Greenwich, United Kingdom